SESSION data not persist

Hello,

I have created a plugin(using PHP) in DA. Everything works fine except the session. Session data is lost after redirect. I can see session_id() regenerating on every request. Please help..Thanks in advance.

As far as I have understood, there is no session per se for plugins. They are independent scripts generated over cli, whose output is then piped to the iframe.
Only the variables available in the environment are accessible.